Present Operation

8x3 vs 8x5
- Beta blowup calculated to be worse for 8x5 than 8x3 at the same bunch current. Level of distortion at 2 mA in 8x5 occurs at 3.4 mA in 8x3. On this basis, using a scaling power of 1.3, calculated a potential 20% increase in luminosity.
Optimize for operating current
- Constrain optics at operating bunch current rather than at zero current. De-optimization at lower current less important, since BBI effects weaker there. Implementation of this suggestion non-trivial, developed by DLR and MJF in e+/e- symmetric way. Optics now bunch-dependent. Chose to optimize for bunch 3 in 9x5.

8x3 vs 8x5